For the chemical equilibrium    can be determined from which one of the following plots

According Vant hofflog Keq=log A-∆H2.303RT;Case I: for exothermic reactions,Positive slope = Note: y-Inercept can be negaive(or) positiveEx: N2+3H2⇌2NH3Case II: For endothermic reactions , ∆H=+velog Keq=log A -∆H2.303R×1T;  Negative slope = Note: y-Inercept can be negaive(or) positiveEx: CaCO3⇌CaO+CO2;Thus for